Goshayeshi L et al. – This study suggested that 25(OH)D plays a protective role against metabolic syndrome (MetS) in Rheumatoid arthritis (RA) patients. However, this cross–sectional study did not permit a power calculation on the causal relationship between Vitamin D (Vit D) and metabolic syndrome. On the other hand, Vit D has a negative correlation with body mass index (BMI) in these patients.

Methods

This cross–sectional study was designed to evaluate the impact of serum Vit D on MetS and body mass index (BMI).

One hundred twenty RA patients were enrolled.

MetS was assessed according to Adult Treatment Panel III criteria.

All patients with known confounders influencing Vit D serum levels were excluded.

Serum value of 25–hydroxyvitamin D (25(OH)D) was measured using a commercial ELISA kit.